Acknowledgments 
Many of our associates at the Rocky Mountain Laboratory have 
assisted in this study, which was initiated by the late Dr. R. R. 
Parker. Most of the information on human cases of tularemia was 
accumulated by Dr. Parker prior to 1949 through correspondence 
with physicians and State health departments. 
Agglutination tests on the many serum samples taken during the 
surveys from shearers and from flocks of sheep were performed by 
the serology department of this laboratory, largely by Lillian Glesne, 
research technician. Necropsies on the four convalescent lambs in 
1952 were made by Dr. William Hadlow, pathologist. Dr. Carl L. 
Larson, Dr. J. Frederick Bell, and Dr. Carl M. Eklund participated 
in the surveys of sheep industry employees. Dr. Herbert G. Stoenner 
supplied many serum samples from his Q fever surveys in man and 
domestic animals in Idaho. 
Others in Idaho who have cooperated include Dr. Scott B. Brown, 
Boise, sheep commissioner for the State of Idaho, and his deputies; 
Robert Brockie, Rupert; and Tom Fica, Ketchum. Lh\ F. X. 
McArthur of the Livestock Disease Control Laboratory at Boise 
has sent us information and specimens. 
We are indebted to Dr. R. M. Thornburg, Burley, Idaho, for 
permission to use the information on treatment of affected sheep with 
streptomycin. La Vor Taylor, president of the Sheepshearers Union, 
Butte, Mont., accompanied us in the Montana surveys of 1950 and 
expedited contacts with the widely scattered shearing crews. Sheep 
owners in Montana and Idaho supplied information on outbreaks, 
donated animals for examination, and permitted the collection of 
blood samples from their flocks, often at considerable inconvenience 
to themselves. 
We would also like to express appreciation to the numerous physi- 
cians and State health departments who have supplied case data and 
blood samples and who have replied to inquiries from this laboratory . 
